/*
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import ts from "typescript";
import { getNodeList } from "../utils/index.js";

/**
 * @param {Object} sourceFile 使用typescript解析成的AST数据
 * @returns {number[]} 返回的异常行数
 *
 */
export const SwitchIntendOneLevel = (sourceFile) => {
  const result = [];

  const delintNode = (node) => {
    if (node.kind === ts.SyntaxKind.SwitchStatement) {
      const { line, character } = sourceFile.getLineAndCharacterOfPosition(
        node.getStart()
      );
      const caseList = node.caseBlock.clauses || [];
      for (const item of caseList) {
        const { line: itemLine, character: itemCharacter } =
          sourceFile.getLineAndCharacterOfPosition(item.getStart());
        if (itemCharacter === character) {
          const nodeList = getNodeList(node);
          result.push({
            line: itemLine,
            nodeList,
          });
        }
      }
    }
    ts.forEachChild(node, delintNode);
  };

  delintNode(sourceFile);
  return result;
};
